There is a 1M Ohms 'positive feedback resistor' in the 10mA current source below:
What's the purpose of it?
Some people just think it's not a 'feedback' but simply a resistor tied to ground, but why it is draw like a 'feedback' resistor? However, if it's only a resistor tied to ground, then what's its purpose?
Here the 10Meg resistor is a 'positive feedback', right?